使用传感器管理器获取手机的方向（滚动，俯仰，偏航）角度？

Question

I'm trying to get the orientation (Roll, Pitch, Yaw) angles of the mobilePhone using Sensor Manager ,and according to what is written in android developers website, the method

getInclination(float[] I) Computes the geomagnetic inclination angle in radians from the inclination matrix I >returned by getRotationMatrix(float[], float[], float[], float[]).` and getRotationMatrix(float[] R, float[] I, float[] gravity, float[] geomagnetic)

Computes the inclination matrix I as well as the rotation matrix R transforming a vector >from the device coordinate system to the world's coordinate system which is defined as a >direct orthonormal basis. ` and it returns boolean value.

My question is, How to get the orientation using the methods mentioned?

Code

@Override
public void onSensorChanged(SensorEvent event) {
    // TODO Auto-generated method stub

    float []I = new float[9];
    float []R = new float[9];

    if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
        float x = event.values[0];
        float y = event.values[1];
        float z = event.values[2];

        tvX.setText(Float.toString(x));
        tvY.setText(Float.toString(y));
        //tvZ.setText(Float.toString(sm.getInclination(I)));    
    }
}

Answer 1

Display disp = (Display)getSystemService(Context.WINDOW_SERVICE);
int orientation = disp.getOrientation();

Use the above two lines to get orientation of mobile phone